ADMM-Based Phase Retrieval ADMM Tabanli Faz Geri Kazanimi
34th Signal Processing and Communications Applications Conference, SIU 2026, İstanbul, Turkey, 7 - 10 July 2026, (Full Text)
- Publication Type: Conference Paper / Full Text
- Doi Number: 10.1109/siu71813.2026.11636524
- City: İstanbul
- Country: Turkey
- Keywords: ADMM, alternating projections, image reconstruction, inverse problems, phase retrieval
- Middle East Technical University Affiliated: Yes
Abstract
Phase retrieval is a fundamental inverse problem that aims to reconstruct an image from Fourier magnitude measurements. In this paper, an alternating direction method of multipliers (ADMM) based phase retrieval method is developed, which can be interpreted as a generalized alternating projection framework. The developed method has closed-form and efficient update steps. In addition, the tolerance parameter for data consistency is updated during iterations by relating it to the measurement noise. The results obtained for different image sizes and SNR levels show that the proposed method provides promising reconstruction performance.